坝基深层抗滑稳定可靠度分析蒙脱卡罗方法

Monte-Carlo Method of Analysis on Reliability of Anti-sliding Stability for the Deep Dam Foundation

通过非线性有限元分析了具有软弱夹层的重力坝坝基滑动破坏过程和失稳机理 ,论证了尾岩抗力体第二滑裂面应向下游倾斜 ,而不宜简单地取为直立。按建议的失稳模式 ,导出了主滑动面处于极限平衡的功能函数和状态方程。鉴于功能函数的复杂性 。

Having analyzed the sliding of gravity dam foundation with a weak intercalation for failure process and destabilization mechanism by the non linear finite technique ,it proved to be true that the second sliding surface in tail rock resistance block would be inclined to the downstream side but not simply vertical.According to the suggested destabilizing model the safety margin and state equation are developed.As the complex of the safety margin the solution of failure probability by the improved and sampling Monte Carlo method is recommended here.